Include the license text as well, not just the license notice
See https://www.apache.org/foundation/license-faq.html#Apply-My-Software
```
michel in dtparse on add-license [?] is 📦 v1.4.0 via 🐍 v3.11.3 via 🦀 v1.69.0
⬢ [fedora-toolbox:38] ❯ cargo package --allow-dirty --no-verify
Packaging dtparse v1.4.0 (/home/michel/src/github/bspeice/dtparse)
Updating crates.io index
Packaged 20 files, 186.1KiB (34.2KiB compressed)
michel in dtparse on add-license [?] is 📦 v1.4.0 via 🐍 v3.11.3 via 🦀 v1.69.0
⬢ [fedora-toolbox:38] ❯ tar tf target/package/dtparse-1.4.0.crate | grep LICENSE
dtparse-1.4.0/LICENSE
dtparse-1.4.0/LICENSE-APACHE
```
Signed-off-by: Michel Alexandre Salim <salimma@fedoraproject.org>
